A New Spectrophotometric Method for Determination of Selenium in Cosmetic and Pharmaceutical Preparations after Preconcentration with Cloud Point Extraction
Figure 7
Effect of equilibration temperature on the corrected absorbance of the complex. Conditions: 0.2% (w/v) Triton X-100, 7.5 μmol l−1 HDZ, 0.35 M HCl, equilibration time: 15 min, and 50 ng mL−1 Se (IV).
